Publications (8)
A pump-probe experiment in cw-mode on ionization of Rydberg atoms
K. L. Romans, A. H. N. C. De Silva, B. P. Acharya +3
Rydberg atoms are in the focus of intense research due to the peculiar properties which make them interesting candidates for quantum optics and quantum information applications. In…
Circular Dichroism in Atomic Resonance-Enhanced Few-Photon Ionization
A. H. N. C. De Silva, T. Moon, K. L. Romans +8
We investigate few-photon ionization of lithium atoms prepared in the polarized 2() state when subjected to femtosecond light pulses with left- or right-handed circ…
Photo-ionization of polarized lithium atoms out of an all-optical atom trap: A complete experiment
F. Thini, K. L. Romans, B. P. Acharya +8
An all-optical, near-resonant laser atom trap is used to prepare an electronically excited and polarized gas target at mK-temperature for complete photo-ionization studies. As a pr…
Two-path interference in the resonance-enhanced few-photon ionization of atoms
B. P. Acharya, S. Dubey, K. L. Romans +6
We investigate the resonance-enhanced few-photon ionization of atomic lithium by linearly polarized light whose frequency is tuned near the 2s-2p transition. Considering the direct…
Using circular dichroism to control energy transfer in multi-photon ionization
A. H. N. C. De Silva, D. Atri-Schuller, S. Dubey +9
Chirality causes symmetry breaks in a large variety of natural phenomena ranging from particle physics to biochemistry. We investigate one of the simplest conceivable chiral system…
Resonant photoionization dynamics during optical trapping of lithium atoms
K. Foster, S. Majumdar, D. Fischer
Photoionization induced by trapping and auxiliary laser fields is an inherent feature of many laser-cooling and optical trapping experiments, yet its microscopic dynamics are rarel…
Magnetic Dichroism in Few-Photon Ionization of Polarized Atoms
B. P. Acharya, M. Dodson, S. Dubey +7
We consider few-photon ionization of atomic lithium by linearly polarized femtosecond laser pulses, and demonstrate that asymmetries of the electron angular distribution can occur…
Constraining particle acceleration in Sgr A* with simultaneous GRAVITY, Spitzer, NuSTAR and Chandra observations
R. Abuter, A. Amorim, M. Bauböck +81
We report the time-resolved spectral analysis of a bright near-infrared and moderate X-ray flare of Sgr A*. We obtained light curves in the -, -, and -bands in the mid- an…